Microsoft suffered a stunning defeat on Monday when a European Union court backed a European Commission ruling that the US software giant illegally abused its market power to crush competitors. The European Union's second-highest court dismissed the company's appeal on all substantive points of the 2004 antitrustruling. The court said Microsoft, the world's largest software maker, was unjustified in tying new applications to its Windows operating system in a way that harmed consumer choice. The verdict, which may be appealed only on points of law and not of fact, could force Microsoft to change its business practices.

That isn't a fair comparison; a better one would be WebKit -> IE as they are both the underlying frameworks powering their respective browsers. To my knowledge, you cannot uninstall WebKit from OSX without having side effects similar to what they would be on Windows if you ripped out all of the core IE dll's.

"That's gigs of disk space you cannot easily claim back. "

Also, all the apps you listed are maybe a couple hundred MB in size. Try again.